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Author :
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (317 download)
Download or read book Turbulence Models and Reynolds Analogy for Two-dimensional Supersonic Compression Ramp Flow written by and published by . This book was released on 1994 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mary W. Jackson
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (31 download)
Download or read book Investigation by Schlieren Technique of Methods of Fixing Fully Turbulent Flow on Models at Supersonic Speeds written by Mary W. Jackson and published by . This book was released on 1960 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 892 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (317 download)
Download or read book Modeling of Turbulent Separated Flows for Aerodynamic Applications written by and published by . This book was released on 1983 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (317 download)
Download or read book Application of Navier-Stokes Code PAB3D with Kappa-epsilon Turbulence Model to Attached and Separated Flows written by and published by . This book was released on 1995 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781794007956
Total Pages : 38 pages
Book Rating : 4.0/5 (79 download)
Download or read book Evaluation of Full Reynolds Stress Turbulence Models in Fun3d written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-14 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full seven-equation Reynolds stress turbulence models are a relatively new and promising tool for todays aerospace technology challenges. This paper uses two stress-omega full Reynolds stress models to evaluate challenging flows including shock-wave boundary layer interactions, separation and mixing layers. The Wilcox and the SSGLRR full second-moment Reynolds stress models are evaluated for four problems: a transonic two-dimensional diffuser, a supersonic axisymmetric compression corner, a compressible planar shear layer, and a subsonic axisymmetric jet. Simulation results are compared with experimental data and results using the more commonly used Spalart-Allmaras (SA) one-equation and the Menter Shear Stress Transport (SST) two-equation models. Dudek, Julianne C. and Carlson, Jan-Renee Glenn Research Center; Langley Research Center NASA/TM-2017-219468, AIAA Paper 2017-0541, E-19343, GRC-E-DAA-TN39118
Author : James R. Forsythe
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book An Assessment of Several Turbulence Models for Supersonic Compression Ramp Flow written by James R. Forsythe and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 1362 pages
Book Rating : 4.3/5 (129 download)
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Rodi
Publisher : Elsevier
ISBN 13 : 008053094X
Total Pages : 1029 pages
Book Rating : 4.0/5 (85 download)
Download or read book Engineering Turbulence Modelling and Experiments 5 written by W. Rodi and published by Elsevier. This book was released on 2002-08-21 with total page 1029 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence is one of the key issues in tackling engineering flow problems. As powerful computers and accurate numerical methods are now available for solving the flow equations, and since engineering applications nearly always involve turbulence effects, the reliability of CFD analysis depends increasingly on the performance of the turbulence models. This series of symposia provides a forum for presenting and discussing new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The papers in this set of proceedings were presented at the 5th International Symposium on Engineering Turbulence Modelling and Measurements in September 2002. They look at a variety of areas, including: Turbulence modelling; Direct and large-eddy simulations; Applications of turbulence models; Experimental studies; Transition; Turbulence control; Aerodynamic flow; Aero-acoustics; Turbomachinery flows; Heat transfer; Combustion systems; Two-phase flows. These papers are preceded by a section containing 6 invited papers covering various aspects of turbulence modelling and simulation as well as their practical application, combustion modelling and particle-image velocimetry.
Author : Manohari D. Ramesh
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (56 download)
Download or read book Correlations to Predict Turbulent Streamwise Influence Regions and Onset of Transition in Supersonic Flows written by Manohari D. Ramesh and published by . This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Correlation functions have been developed to predict both the extent of the streamwise influence regions in supersonic turbulent flows, and the onset of transition in supersonic flow past a flat plate. These correlations are empirical relations involving a priori known flow parameters. In the turbulent flow regime, correlations that can compute the extent of the upstream and downstream regions of influence in two-dimensional compression ramp and expansion corner flowfields have been developed. The correlations were obtained by analyzing numerically computed flowfields. Regression analysis using the least squares approach was applied to the computed flowfield data to determine the correlation functions. The turbulent correlations can be used in conjunction with an iterative parabolized Navier-Stokes algorithm to minimize the region of iteration and thereby reduce the computational time. In the transitional region, correlation functions that can accurately predict the onset of transition over a flat plate have been determined in a similar manner. The transitional correlations can be used in conjunction with any flow solver in order to automatically determine the onset of transition and apply a turbulence model for closure at the appropriate location. The general form of these correlation functions, the wide range of applicability, and their ease of calculation makes them a handy tool for engineering design purposes. The accuracy of these functions is demonstrated by comparing them with experimental and empirical data available in the literature.
Author : Kambiz Vafai
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.3/5 (91 download)
Download or read book Current Developments in Numerical Simulation of Flow and Heat Transfer written by Kambiz Vafai and published by . This book was released on 1994 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Greene
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (453 download)
Download or read book Turbulence Modeling/Training written by Charles Greene and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with the code flo 103 of Jameson and Martinelli, a robust, flexible numerical platform has been constructed which can accept O and R meshes as well as C, accepts a variable number of PDEs in the turbulence models, has consistent gradient compensation, enhanced multi-grid sequencing, a restart option, various post-processing options, the option of recording convergence histories, accepts K-e, k-e-S, second order and Baldwin-Lomax turbulence models, has dynamical memory allocation, vectorized data structure and Unix integration, and computes subsonic, transonic and supersonic flows. Virtually any turbulence model can be run in essentially any two-dimensional geometry, so that they can be compared on an equal footing. The following cases have been computed: homogeneous grid turbulence; plane jet and mixing layer; flat plate boundary layers; semi-infinite plate (subsonic (Clauser) and supersonic (Delery)); finite plate (subsonic (ONERA)); supersonic compression ramp (Settles et al - Mach 2.93); Delery bump.
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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (227 download)
Download or read book Turbulence Modeling for Steady Three-Dimensional Supersonic Flows written by and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Jones and Launder two-equation model of turbulence has been formulated and applied to the solution of supersonic, three-dimensional flow and the results compared to experimental data. Two solution techniques were studied, the boundary layer theory approach and the parabolized Navier-Stokes method formulated in a body fitted coordinate system. The K-E turbulence model results were compared with an algebraic turbulence model as applied to the prediction of flow about a spinning ogive-cylinder-boattail configuration. The K-E model gave slightly superior results in both the boundary layer and PNS computations. Rotta's non-isotropic theory for the Reynolds stresses was incorporated into the formulation. Results for the small angle of attack configuration showed little effect of non-isotropy. The cross flow properties are the most strongly affected. Bradshaw's streamline curvature theory was also considered and the results show negligible influence for the present case.
Author : Institute for Computer Applications in Science and Engineering
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (317 download)
Download or read book Algebraic Turbulence Models for the Computation of Two-dimensional High Speed Flows Using Unstructured Grids written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1988 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1596 pages
Book Rating : 4.:/5 (319 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 1596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (227 download)
Download or read book Turbulence Modeling: Second Order Closures for Compressible Turbulence in External Aerodynamics written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with the code flo 1O3 of Jameson and Martinelli, a robust, flexible numerical platform has been constructed which can accept 0 and R meshes as well as C, accepts a variable number of PDEs in the turbulence models, has consistent gradient compensation, enhanced multi-grid sequencing, a restart option, various post-processing options, the option of recording convergence histories, accepts k-e, k-e-S, second order and Baldwin-Lomax turbulence models, has dynamical memory allocation, vectorized data structure and Unix integration, and computes subsonic, transonic and supersonic flows. Virtually any turbulence model can be run in essentially any two-dimensional geometry, so that they. can be compared on an equal footing. The following cases have been computed: homogeneous grid turbulence; plane jet and mixing layer; flat plate boundary layers; semi-infinite plate (subsonic (Clauser) and supersonic (Delery)); finite plate (subsonic (ONERA)); supersonic compression ramp (Settles et al - Mach 2.93); Delery bump. Documentation is in preparation.
Author : Alain Dervieux
Publisher : Springer Science & Business Media
ISBN 13 :
Total Pages : 604 pages
Book Rating : 4.F/5 ( download)
Download or read book Computation and Comparison of Efficient Turbulence Models for Aeronautics — European Research Project ETMA written by Alain Dervieux and published by Springer Science & Business Media. This book was released on 1998-08-27 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains contributions to the BRITE-EURAM 3rd Framework Programme ETMA and extended articles of the TMA-Workshop. It focusses on turbulence modelling techniques suitable to use in typical flow configurations, with emphasis on compressibility effects and inherent unsteadiness. These methodologies are applied to the Navier-Stokes equations, involving various turbulence modelling levels from algebraic to RSM. Basic turbulent flows in aeronautics are considered; mixing layers, wall-flows (flat-plate, backward-facing step, ramp, bump), and more complex configurations (bump, aerofoil). A critical assessment of the turbulence modelling performances is offered, based on previous results and on the experimental data-base of this research programme. The ETMA results figure in the data-base constituted by all partners and organized by INRIA
